Renewables Estimator - Construction

Job Summary

The BESS Estimator is responsible for preparing accurate, competitive, and timely cost estimates for utility-scale Battery Energy Storage System (BESS) projects. This role develops detailed civil, electrical, and balance-of-plant estimates using Trimble B2W (Heavy Bid) and collaborates with engineering, procurement, and construction teams to support bid strategy, pricing, and project execution planning.

Job Responsibilities:

Estimating & Cost Development

• Prepare detailed conceptual, budgetary, and definitive cost estimates for BESS projects.
• Develop quantity takeoffs and pricing for civil, structural, electrical, and balance-of-plant scopes.
• Build and maintain estimates using Trimble B2W (Heavy Bid).
• Apply historical cost data, productivity factors, and crew compositions.
• Develop indirect costs including general conditions, mobilization, temporary facilities, and commissioning support.

Technical & Scope Review

• Review RFPs, IFC / IFB / Initial Design drawings, SOW’s, specifications, contracts and other documents to determine full project scope.
• Identify constructability issues, scope gaps, and commercial risks.
• Support value engineering and alternative means and methods.

Vendor & Subcontractor Pricing

• Solicit, evaluate, and level subcontractor and supplier bids.
• Develop pricing for battery containers, inverters, transformers, cabling, foundations, civil work, installation labor and other work as required for project execution.
• Coordinate with OEMs and major equipment vendors.

Cost Risk & Contingency

• Develop project contingency based on risk profiles.
• Identify cost drivers, escalation risks, and supply chain impacts.
• Support sensitivity analyses and pricing scenarios.

Preconstruction & Handover

• Participate in bid reviews, estimating closeouts, and turnover meetings.
• Support schedule development and logistics planning.
• Prepare estimate narratives, clarifications, and assumptions.
• Facilitate bid turnover to the ops team upon award.